249128240

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{72421}}^1$

素因数の和:72477

約数の個数: 40

約数和(自身を含む): 592701648

約数和(自身を除く): 343573408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 72421, 144842, 289684, 362105, 579368, 724210, 1158736, 1448420, 2896840, 3114103, 5793680, 6228206, 12456412, 15570515, 24912824, 31141030, 49825648, 62282060, 124564120, 249128240]

約数ペア:

[(1, 249128240), (2, 124564120), (4, 62282060), (5, 49825648), (8, 31141030), (10, 24912824), (16, 15570515), (20, 12456412), (40, 6228206), (43, 5793680), (80, 3114103), (86, 2896840), (172, 1448420), (215, 1158736), (344, 724210), (430, 579368), (688, 362105), (860, 289684), (1720, 144842), (3440, 72421)]